Alps Isolating Carabiner Mug The Alps Isolating Carabiner Mug is a stainless steel with a capacity of 200ml. The mug also has an earpiece, this earpiece is also a hook and can also be used to hang on your belt or your bag. This is ideal if you have an outdoor activity. The mug comes in silver. On the inside of the mug is metal. The mug can be washed in the dishwasher. You can print your own design or logo design on the mug. You can print your design or logo in up to 4 colors. Also, you can engrave your logo. The Alps Isolating Carabiner Mug is BPA-free production.